Ventilator



M. L. FISK VENTILATQR Oct. 10, 1939.

Filed May 2l, 1937 2 Sheets-Sheet l oct. 1o, 1939.

M. L.. FlsK 2,175,287 VENTILATOR Filed May 2l, 1937 2 Sheets-Sheet 2 nveniof /MM KM Patented oa. 1o, 1939 UNITED STATES PATENT OFFICE VENTILATOR Merton L. Fisk, Somerville, Mass.

Application May 21, 1937, Serial No. 143,956

4 Claims. (Cl. 98-99') 5 current of air upwardly as it enters the room;

this type of ventilator is usually designed for angular adjustment relative to the sash whereby the air current may be controlled, both as to direction and volume.

v This device is arranged to overcome several objections to the present day ventilator of the foregoing type. These objections reflect both the practical and commercial inefficiency of present day ventilators. I have perfected a device adapted to be received and held inrposition by the window frame screw, aunit common to frame structures. This eliminates extra attaching means and avoids mutilation of the window frame.

Another novel feature of my device is the ease with which it may be placed inY operating position and also be restored to non-operating position without removal thereof from the supporting members. To the best of my knowledge, all

ventilators, of this type, comprise a frame adapted for lengthwise adjustment for windows of various widths; these frames usually contain glass, or metal, panels to function as a deflector of air currents and must be removed as a unit from their supporting brackets when not needed,

or whenever an unobstructed window area is desired; on such an occasion the operator is then confronted with the problem of where to place it for the time being, or for storage purposes,

as they are cumbersome and fragile. The foregoing difficulty is eliminated by my improved device wherein a flexible reector unit is employed and can be automatically taken up on a roller element by merely freeing the outer end 0 of said deflector, the roller being constantly under spring tension in winding direction.

An outstanding defect in present day ventilators lies in the fact that they only partially shield the window stool and frame members in stormy weather; my improved ventilator is arranged to prevent rain and snow from contacting these frame members but at the same time permit air to enter the room.

This improved ventilator is arranged for exf tremely simple adjustment to meet all conditions, easy installation and removal from the window frame, and to present a small package for display or storage purposes.

The invention will be best understood by the following description and drawings wherein one embodiment will be disclosed and the scope thereof indicated by the appended claims.

In the drawings:

Figure 1 is a front elevation of my improved device in operative position relative to a window Bi frame.V Y

Fig. 2 illustrates the device in non-operative position but available for immediate use.

Fig. 3 is a vertical section on line 3-3 of Fig. 1.

Fig. 4 is illustrative of the protective qualities v10d presented by my device.

Fig. 5 is a plan view on line 5-5 of Fig. l.

Fig. 6 is a plan section on line 6-6 of Fig. 2; and

Fig, 'I is a cross section on line 1-1 of Fig. 4. yllif Figure l illustrates the association of this invention relative to a conventional window frame comprising a stool I0, inside casing members II, sash guide members I2 and I3, arranged to cooperate with a slidable sash unit I4, and the 20, sill I5 with which the sash contacts when in closed position. The usual parting bead is shown at I6 and serves to maintain sash I4 relative to members I2 and I3 which, in turn, are held in position bya plurality of wood screws, the lower 25 one of which is shown at I1, Figs. 3 and 4. It is a fact that this lower screw, l1, is universally used `and located in substantially the same spot on all standard frames and I have taken advantage of this fact in the present case for two reasons; 30, first, no attaching element need be furnished with the device; second, the casing need not be marred by additional holes to be exposed after removal of the supporting brackets.

In view of the foregoing I have provided a pair 35 of-supporting brackets I8 and I9, positioned at the left and right sides, respectively, of the window frame as seen in Figs. 1 and 2. These brackets may be similar in outline, and each provided with an elongated slot 20 having an enlarged portion 2| at the lower end thereof adapted to be slipped over the head of screw I1, above referred to, after the latter has been slightly unscrewed to permit bracket I8 to be moved into position as clearly shown in Figs. 3 and 4; the screw may then be tightened to obtain a desired degree of friction between the bracket and window frame member; it will be understood that the brackets I8 and I9 may then be instantly adjusted, about screw I'I as a fulcrum, to vary their 50 angular position relative to sash I4.

The bracket I8 may be provided with a pair of outwardly extended flanges 22 and 23 at the upper and lower edges, respectively, thereof while their inner edges are preferably flanged, as at 24, 55

to prevent direct passage of air into the room. The upper flange 22 is provided with a notched aperture 25, Fig. 5, adapted to receive the outer end of a roller shaft 26 having a flattened portion to prevent rotation thereof in aperture 25. The shaft 25 may extend into a roller element 21, in axial alinement therewith, and connected thereto by means of a helical spring member 28, one end of which is connected to said shaft, the other end thereof being anchored in said roller, as shown in Fig. 6. This provides an arrangement whereby roller 21 may be constantly urged to rotate, under inuence of the spring, in a clockwise direction as indicated by the arrows.

The lower end of roller 21 is received by flange 23 and rotatably supported thereat by a screw member 29.

Wound about roller 21 I provide several turns of thin flexible material 30, such as water-proofed paper, or fabric, the number of turns embodying su'cient length to extend the width of a given window. The inner edge of this material may be secured to the roller in any suitable manner (not shown) while the outer edge thereof is preferably received by a stiifening', or binder element 3l, of thin metal extending the entire width thereof. At a convenient point on the element 3| I provide an operating handle, or knob, 32 secured thereto by screw 33. 'Ihis knob is arranged to present a neck portion 34 vadapted to be received by an elongated slot 35 in the flange on bracket I9, as-shown in Figs. 1.and2.

Referring to Fig. '1, it will be noted that the side wall of the bracket lies in a plane with the outer edge cf parting bead I6 and could therefore pass beyond said bead during angular adjustment of the bracket. I prefer that this should not happen and therefore provide a stop element 35 in the form of an elongated spring member, one end of which is riveted, as at 31, to flange 24, the free end being allowed to protrude from an aperture 38 in the bracket and engage bead I6, as shown. When the bracket is adjusted to the position shown in Fig. 3vthe element 35 willex and assume a position ush with the bracket surface when engaged by guide member I2.

It will now be understood that after the knob 32 has been drawn to the right, Fig. 1, and dropped into slot 35, the strip of material 3D presents an air deflecting element similar to the conventional type employing glass, or other inexible material. The spring 28 should remain under tension at all times, therebyl holding the material taut when in operating position. It follows that upon releasing the knob, from slot 35, roller 21 vwill automatically wind the material 35 thereon` until said knob engages iiange 24 and arrests the action.

Referring to Figs. 3 and 4 it will be noted that angular adjustment of the bracketsl and I9 may be accomplished by oscillating them about the screws I1 as a pivot point, said point being located about midway the length of said brackets. This arrangement permits a tilting action whereby the lower edge of material 3U may be positioned outside and below the edge of stool I0, as clearly shown in Fig. 4, thereby deecting rain or snow away from said stool and protecting the same. It will be seen that the bracket becomes locked between stool IEB and bead I5, rendering the former rigid. Present-day ventilators of this type are pivoted at the extreme lower end of the bracket and therefore cannot be adjusted to offer such protection to the stool, hence the sash must be closed in stormy weather, with the resulting loss of ventilation.

The present device presents a structure easily applied by the layman, quickly adjustable from operating to non-operating position without removal thereof from the window frame, and extremely compact for storage or handling purposes, bracket I9 being adapted for nesting with the left hand unit, all of which features are believed to be absent in conventional ventilators of this order. It is non-breakable, inexpensive to manufacture and requires no adjustment for differences in window widths.

I claim:

1. A device of the class described comprising an air-current deilector curtain spirally Wound about a roller unit, a pair of brackets for supporting the deflector curtain, and individual means for pivotally mounting each bracket to a window frame part and relative to the stool, the pivot point being positioned a suicient distance above the stool so as to permit unlimited tilting of the deflector curtain relative to the stool surface, for the purpose set forth.

2. `A ventilator of the class described comprising, in combination, a bracket adapted for pivoted attachment to one side of a window structure, a second bracket also adapted for pivoted attachment to the opposite side of the window structure, an air-current deflector element position'ed intermediate and supported by said brackets, and a yieldable stop member carried by each bracket arranged to engage its respective parting bead to limit pivotal movement of the bracket in one direction only.

3. Inv Ventilating apparatus, the combination of an elongated strip of flexible material, a roller unit upon which the material is adapted to be wound when not in use but arranged to release said material at will for the purpose set forth, a supporting bracket adapted to receive the roller unit in a generally upstanding position, said -bracket having an elongated slot therein adapted ,to receive a fastening member in a manner to permit-.rotation of the .bracket thereabout, a

stiffening member secured to the free edge of the fiexible material, a second pivotally mounted bracket arranged to receive said stiffening member, each of said brackets being operable independently of the other to establish parallel relationship between the upperand lower edges of said flexible material.

4. In Ventilating apparatus of the class describedan air-current delector unit comprising -a curtain element having the lower edge thereof normally positioned adjacent the window stool window frame, the lower end of each bracket.

being arranged to engage the outer edge of the window stool, and a retractable stop member carried by each bracket adapted to simultaneously engage a parting bead, whereby the brackets become locked against oscillatory movement in either direction.

MERTON L. FISK. 

